exception

问题 I'm trying to input some details about student to the program. when i press the save button its giving an exception error like this, "Exception in thread "AWT-EventQueue-0" java.lang.UnsupportedOperationException: Not supported yet." public static ArrayList<Student> arrayStudent = new ArrayList<Student>(); public static void Student(Student student){ try{ BufferedWriter buffer = new BufferedWriter(new FileWriter("Students.txt", true)); buffer.write("Name : "+student.getFirstName()+" "+student

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 6 years ago . In Java, is the keyword (throw) only used for throwing exception that you've created. If not, can someone give an example of how it is used outside of your own made exceptions. 回答1: You can throw anything that extends Throwable void greet(String name) { if (name == null) { throw new

问题 I've read It isn't a best practice to handle multiple Exceptions like this: public void myMethod() throws ExceptionA, ExceptionB, ExceptionC { //more code here } And then to call myMethod(): try { myObject.myMethod(); } catch(Exception e) { //More code here } Despite Exception is the parent class of all the other exceptions, it is consider a bad practice. But, in my application I'm using java SE 6 and I need to: Do File operations that can imply a FileNotFOundException and IOException Marshal

问题 I've read It isn't a best practice to handle multiple Exceptions like this: public void myMethod() throws ExceptionA, ExceptionB, ExceptionC { //more code here } And then to call myMethod(): try { myObject.myMethod(); } catch(Exception e) { //More code here } Despite Exception is the parent class of all the other exceptions, it is consider a bad practice. But, in my application I'm using java SE 6 and I need to: Do File operations that can imply a FileNotFOundException and IOException Marshal

问题 I have a function written in SQL developer and every time I want to execute I get value or numeric error and I simply cannot get where I have gone wrong. This is my code so if someone can give me some tips on where my mistake is hidden I would be grateful. The types that are used in the code are defined and mostly consist of varchar objects and tables of objects and I am properly putting them as an input variable. I am getting frustrated with that error because I have written similar function

问题 I have a function written in SQL developer and every time I want to execute I get value or numeric error and I simply cannot get where I have gone wrong. This is my code so if someone can give me some tips on where my mistake is hidden I would be grateful. The types that are used in the code are defined and mostly consist of varchar objects and tables of objects and I am properly putting them as an input variable. I am getting frustrated with that error because I have written similar function

问题 I I have created an app that was working perfectly before I introduces ViewFlipper into it. I really need to use this, but now I'm stuck or this exception. frag_home.java public class Frag_home extends Fragment { private String mParam1; private String mParam2; Animation fade_in, fade_out; ViewFlipper viewFlipper; private OnFragmentInteractionListener mListener; public Frag_home() { // Required empty public constructor } // TODO: Rename and change types and number of parameters public static

问题 I have a choice here. Two opinions: One is to read an XML file, which is about one page long, twice and try to find out if I can find a certain attribute value and assign it to a string or not. First time is to find out if the attribute exists and not null. Second time to read and assign the value. If([xmlAttribute]!= null){ string = xmlAttribute; } Two is just read the same XML file once and try to assign the value directly without try to find it first. If failed, it will throw an exception

问题 can help me fix this error? when I build my syntax no error, tp when I execute the error appeared, I have been using all means start to run VS 2015 deng run as administrator until exeption setting but nothing changes. any idea? This is the XAML: <Page x:Class="berhasil.MainPage" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="using:berhasil" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns

问题 I am working on a class with an inner class My code: package com.solignis; public class Config { public static final Target target; class Target { public void create(String targetName) { System.out.println("Created" + targetName); } public void destroy(String targetName) { System.out.println("Destroyed" + targetName); } } } IntelliJ doesn't see anything wrong with the subclass but it keeps complaining that I have not initalized the static variable target . But when I try to initialize it with